Fluid-pressure generator



Nov. 3 1925.

H. W. BELL FLUID PRESSURE GENERATOR Filed Oct. 3l, 1919 2 Sheets-Sheet 1 @Moz/new Novo 3 I H. W. BELL FLUID PRESSURE GENERATOR Filed Oct. 31, 1919 2 Shouts-Sheet 2 o El 5720 *2:55

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Patented Nov. 3, 1925.

UNITED; sfrri'rlis HARVEY w. BELL, on Yonnn'ns. Naw YORK, A-ssrGnoR To Tian BELYT Cortritn:

1,559,931 PATENT OFFICE.

T'ION, or DOVER, DELAWARE, A- coRPoRA'rIoN or DELAWARE;

FLUIDPRESSURE GENERATOR.

Application filed October 31, 1919;

To all whom t may concern:

Be it known that I, HART-rrr VW. BELL, a citizenl ofthe United States of America, and a resident of Yonkers,lWestchester County, and State of N ew York, have invented certain new and useful Improvements in' Fluid- Pressure Generators, of which the following is a specification, reference being had to the accompanying drawings, forming a partthereof.

This invention relates to fiuid pressure generators, and its object is to'provide a simple and eilicient power generator. Another object is to provide an apparatus for generating pressure in a gas. Another' object is to provide an arrangement for utilizing the heat and the pressure generated within the cylinder of an internal combustion engine for some further function than that of running the engine. Another object is toV inject a fluid into the cylinder of an ,internal combustion engine after the eXplosion therein for augmenting the volume of the exhaust gas and to store and make use of these gases; and more particularly to inject water for the double purpose of augmenting the volume of the gas and cooling the engine.

' Another object is to provide a fluid pressure system in which the pressure is generated as aforesaid.

These and other objects of the invention will appear in the following specification in which I will describe the invention, the :novel features of which will be set forth in ap pended claims.

Referring to the drawings:

Figure 1 is a diagrammatic representation of a fluid pressurer system which is made accordingto andeinbodies this invention.

Figure 2 Ais a sectional'elevation of an apparatus for generating pressure in the manner herein disclosed, the section being taken on the line 2-2 of Figure 3.

Figure 3 is an elevation partly in section of the same apparatus, the view being taken at right angles to that shown in Figure 2.

Figures 4-11 are diagrams illustrating the relative' position of parts ofthe apparatusI during one cycle of its operation.

Figure 12 is a diagram showing the different angular positions of the eccentrics which drive the sleeve piston during the cycle illustrated in Figures 4-11, and Figure 13 is a similar diagram showing the angular Serial No.` 334,771.

positions during the same cycle of' the ,crank to which the power piston is connected. A.

Figure 14 is fragmentary sectionalreleva- Y Like characters of reference' designate corresponding parts in all the figures of the drawings. 4

20 designates the cylinder of a four-cycle' internal combustion engine of novel construction. This restson` a base-21. vIt is provided with intake ports 22 with which is connected a carburetor 23. It also has exhaust ports 24 which are connected by a pipe 25 Vwith a pressure tank 26. A check valve 27 is interposed in the pipe 25. 28 isa water intake port through the wall of the cylinder between the inlet and Yevhaust ports. The cylinder' is ylagged as at 29 with a heat insulating material. p

Vithin the cylinder is a sleeve piston 30. This has ports 31 which register with the intake ports 22 at certain parts of the cycle, ports 32 which cooperate with the exhaust port 24 and a port 33 which cooperates with the water intake ports 28. 34 is a spark plug in the sleeve piston. ,Y

Brackets 35 project upwardly from the sleeve. A transverse rod 3,6 which passes through them is connected by connecting rods 37 to be reciprocated by eccentric pins 38. y

40 .is a power piston which is arranged to reciprocate within the sleeve piston. Its connecting rod 41 is connected with the crank pin 42 of crank shaft 43 which is rotatively supported in the base 21. Gears 44 on the crank shaft mesh with gears 45 which drive the eccentric pins 38 atene-half the speed of the crankshaft. Another gear 46 of the same diameter as that of` gears 45 meshes with one of them and rotates the shaft 47 to which is affixed a snail shell cam 48. K

In Figure 1 a translating device 60 is shown connected with the pressure tank 25 by a pipe 61 in which is a manually actuated valve 62. A pressure regulator 63 is shown connected by its lever 64 and a rod 65 with a throttle valve 66 between the carburetor 23 and the cylinder 20. r

This apparatus operates in the following the parts at the completion of the exhaust stroke is shown. At this time, the crank pin 12 is at the uppermost part of its movement as indicated diagrannnatically at 1 in Figure 13, so that the power piston 40 is at the upper end of its travel.` The eccentric pins 38 are at this time in the position indicated diagrammatically at 1 in Figure 12, so that the sleeve piston 30 has started on its upward movement from the lowerinost part of its stroke. These positions are such that the port 32 has just closed the exhaust port 24.

Figure 5 shows the start of the suction stroke. Power piston is in this position shown half way down, as lindicated di..- grammatically at 2 in Figure 13. The sleeve piston is now half way up in its stroke as indicated diagrammatically at 2 in Figure 12. Although sleeve port- 33 is passing cylinder port 28, the suction is not suflicient to raise a spring pressed ,check valve from its seat. f

Figure 6 shows the end of a suction stroke. The power piston 4() is at the lowermostpart of its stroke as indicated diagrammatically at 3 in Figure 13, and the sleeve piston is three-quarters of the way up. In this posi tion the sleeve port 31 is in register with the intake port 22, and an explosive mixture is admitted to the cylinder through them.

Figure 7 shows the relative position of the parts at the start of the compression stroke. Here the power piston l0 is one-half way up as indicated diagrammatically' at 4 1n Figure 13 and the sleeve piston is at the upper end of its stroke as indicated diagrammatically at 4: in Figure 12. All of the ports are now closed.

Figure 8 shows the position of the parts at the beginning of the working stroke. l/Vhile in this position, the charge' is fired by the spark plug 3d. it this time the power piston is at the upper end of itsr stroke as indicated diagrammatically at 5 in Figure 13, and the sleeve piston is quarter'way down in its stroke as indicated diagrammatically at 5 in Figure 12.

Figure 9 shows the relative position of the parts at the intermediate part of the expansion stroke. The power piston 4:0 is half way down in its travel, as indicated dia- `iframmatically at 6 in Figure 13 and the `sleeve piston 30 is half way down in its CII stroke as indicated diagrammatically at (i in Figure 12. At this time the sleeve port 33 in register with the water intake port 28.

YWhile the engine pistons have been makingthese parts ofv their movement the snail shell cam e8 acting upon bell crank 'lever l53 has expanded spring 52 and held down the plunger of pump 50 by the connecting rod 5%. rihis is the suction stroke of the pump. A" the time the ports 28 and 33 register the abrupt shoulder of the snail shell cam passes the part of the bell crank lever which is all of the ports are closed.l

pressed against this cam, and this allows the spring 52 to impart a sudden upward stroke to the pump plunger, thereby injecting through pipe 51 and the ports 28 and 33 a desired amount of water into the engine cylinder. The pump pressure is sufiicient to raise a spring pressed check valve 55 from its seat.

This water is immediately changed into steam by coming in Contact with the hot gases of combustion. It also has a cooling effect upon the apparatus. Y

Figure 10 shows the relative position of the parts at the end of the expansion stroke and the beginning of the exhaust. In this case the power piston Zl() is at the lowermost part of its travel as indicated at 7 in Figure 13, and the sleeve piston 30 is approaching the lower end of its travel as indicated at 7 in Figure 12. All of the ports are closed, but the sleeveport 32 is beginning Vto open the exhaust ports 211.

Figure 11 shows the relative position of the parts at the intermediate part of the eX- hauststroke. ln this figure the power piston 40 is half way up its stroke as indicated diagrammatically at 8 in Figure 13 and the sleeve piston 30 is at the lowermost part of its stroke as indicated diagrammatically at 8 in Figure 12. The sleeve port 30 is now in full registry with the exhaust ports 24- and the combined gases of expansion and the steam are being forced out through these 27 into the pressure tank 26.

Referring again to Figurevd in which the parts Yare shown at the end of the exhaust stroke, it will be seen that there is practically no clearance between the power piston 40 and the sleeve piston 30 at the time the exhaust ports are closed. Therefore, practically all of the within the cylinder is ejected.

Relative positions of the parts are such that at the beginning of the explosion stroke illustrated at Figure 8, there is a substantial distance between the power piston l0 and the sleeve piston 30 which forms the com pression and combustion chamber.

When the pressure in .tank'25 reaches the predetermined amount, the regulator 53 will close the throttle valve 66 and slow down the engine.

The generated pressure may be utilised in a part of the heat generated Within the engine cylinder is absorbed in the Water before it is injected into the cylinder. The water may be even heated into steam before it is injected. Or the heated Water from the jacket may be led into pipe 25 as indicated at 72, to thereby cool the gases entering the pressure tank and at the same time conserve -the heat generated by the engine.

The invention upon Which this application is based is broader than the specific embodiment thereof shown and described, which is more or less diagrammatical and used only for the purpose of illustrating a way in which the invention may be used, and I, therefore, intend no limitations other than those imposed by the appended claims.

What I claim is:

l. A four cycle internal combustiony engine comprising a cylinder provided With ports, a shaft, avreciprocatory sleeve in the cylinder closed at one end connected to be actuated by the shaft and provided With ports, a reciprocatory piston Within the sleeve and connected with the shaft, said' sleeve and piston being arranged to open and close the ports and arranged to leave a combustion space between the top of -the piston and the closed end of the sleeve at the end of the compression stroke of the piston, to bring the top of the piston into close proximity With the closed end of the sleeve at the end of the exhaust stroke of the piston to effect complete scavenging, and means for injecting Water into the sleeve during the Working stroke of the engine and after ignition of the charge therein.

2. A four cycle internal combustion engine comprising a cylinder provided with ports, a shaft, a reciprocatory sleeve in the cylinder closed at one end connected to be actuated by the shaft and provided With ports, a reciprocatory piston Within the sleeve and connected With the shaft, said sleeve and piston being arranged to open and close the ports and arranged to leave a combustion space between the top of the piston and the closed end of the sleeve at the end of the compression stroke of the piston to bring the top of the piston into close proximity With the closed end of the sleeve at the end of the exhaust stroke of the piston to elfect complete scavenging, and a pump driven by the engine arranged to inject Water into the sleeve during the Working stroke of the engine and after ignition of thecharge therein.

3. An internal combustion engine comprising a cylinder provided With ports and a shaft, a reciprocatory sleeve in the cylinder closed at one end connected to be actuated by the shaft and provided With ports, a reciprocatory piston Within the sleeve and connected with the shaft, said sleeve and piston being arranged to open and close the ports and arranged to' bring the topf of-v the piston into close proximity with theclosed end of the sleeve at the end of one ofthe strokes of the piston.

4. A four cycle internal combustion en# gine comprising a cylinder provided with ports and a shaft, a reciprocatory sleeve in the cylinder closed at one end connected'r to be actuated by the shaftandy provided AWit-lr ports, a reciprocatory pistonl Within the sleeve` and connected ywith `the shaft,l said sleeve and piston being` arranged to open and close the ports and arranged to leave a combustion space betweenL the top ofthe piston and the closed end of the sleeve atthe end of the compression stroke of the piston, andy to bring the top ofl the piston into close proximity lwith theclosed end yofy the,

sleeve at the end of the exhaust stroke of the piston to eect complete scavenging.

5. A four cycle internalcombustion engine comprising a cylinder provided with ports, and a shaft, a reciprocatory sleeve in the cylinder closed at. one end connected-to be actuated bythe shaft and provided With ports,

a reciprocatory piston Within the sleevev to effect complete scavenging, means for iny jecting Water into the sleeve during the Working stroke of the engine and afterV ignition of the charge therein.

6. A four cycle internal combustion en ginecomprising a cylinder provided With ports and a shaft, a reciprocatory sleeve in the cylinder closed at its upperend, means for connecting the sleeve with the shaft to be reciprocated thereby at one half the speed of the shaft through a shorter path than the stroke of the piston, said sleeve being provided with ports, a reciprocatory piston Within the sleeve and connected With the shaft, said sleeve and piston being arranged to open and close the ports and arranged to leave a combustion space between the top of the piston and the lclosed end of the sleeve at the end of the compression stroke of the piston, and to bring the top of the piston into close proximity With the closed end of the sleeve at the end of the exhaust stroke of the piston to effect com plete scavenging, a pump actuated by the engine and connected With one of the cylinder ports arranged to inject Water into the sleeve during the Working stroke of the piston and after ignition ofl the charge therein.

7. A four cycle internal combustion engine comprising e Cylinder provided withvports, and a shaft7 a reeiproeatory sleeve in the cylinder Closed at one end Connected to be actuated by the shaft and provided with ports7 a reciprocatory piston within the .leeve and connected with the Sharif-'z sL d .sleeve and pieton being arranged te open and close the ports and arrenged to leave u combustion space heween the top of the piston and the dosed end of the sleeve at the end of the Compression stroke of the' Tie t0n, and to bring the rop et' the pieten into Close prexiinity with the Closed end ef Jche leere et the end of the exhaust stroke of the piston, ineens for automatically introducing Water inte the sleeve during the working' stroke of the engine and after ignition ef the Charge therein.

S. four cjeie internal combustion engine Con-iprising;` a cylinderprovided with ports, and e shaft, e reeiprocetory eeefe in the c inder closed et its un 3er end. ineens for connecting the sleeve with the shaft to be reeiproezited thereby et one half the speed of the shaft through e shorter path than the stroke of the pistona said sleeve being` provided With ports7 a reeiprocatory pist0n Within the sleeve and connected with the shaft, said sleeve and piston being arranged to open and close the ports and arranged to leave a Combustion space between the top of the piston en( the dosed end of thersieere at the end of the Ceinpressen stroke et the piston and to bring' the top ef the piston into dese proximity with the cesed end of the sleeve at the end of the exhaust stroke ef the 'piston to effect eonipete scavenging, :i pinnp actuated by the engine and Connected n h one of the cylinder verts larranged to inject rfier inte the sleeve during' the werk f strek@ of the pieten and after ignition et H e charge therein.

9. jr. 'fern-cycle internal Combustion engine reempi'sing u cylinder, :t seeve closed at one end and operating' lin said cylinder, e piston operating; in the sleeve, the sleeve and cylinder having intake and exhaust ports rejistering in the intake end exhaustperiods r the ene-ne cycle and further having other ports re:v tering When the intake and eX- haust per, ere Closed during a part of the power strehe and means for introducing water uneer pressure through said registering ports when the intake and exhaust ports are closed.

lIn Witness whereof, have hereunto set my hand this th day of October, 1919.

HARVEY W. BELL. 

